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Change this radical to an algebraic expression with fractional exponents 3√a

User Plaha
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\bf ~\hspace{7em}\textit{rational exponents} \\\\ a^{( n)/( m)} \implies \sqrt[ m]{a^ n} ~\hspace{10em} % rational negative exponent a^{-( n)/( m)} \implies \cfrac{1}{a^{( n)/( m)}} \implies \cfrac{1}{\sqrt[ m]{a^ n}} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \sqrt[3]{a}\implies \sqrt[3]{a^1}\implies a^{(1)/(3)}

User Justin Thompson
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